/usr/lib/x86_64-linux-gnu/tracker-1.0/libtracker-extract.so.0 is in libtracker-sparql-1.0-0 1.6.2-0ubuntu1.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/tracker-1.0/libtracker-extract.so.0.0.0